USA TODAY tech expert Jefferson Graham explains the pros and cons of your childrens' favorite apps. TikTok, a popular video-sharing app, has agreed to pay $5.7 million to settle Federal Trade Commission allegations that it illegally collected personal information from children. The FTC's complaint, filed by the Department of Justice, alleged that TikTok, formerly known as Musical.ly, The act requires websites and online services to direct children under 13 to get parental consent before collecting personal information. The operators of the app "knew many children were using the app but they still failed to seek parental consent before collecting names, email addresses, and other personal information from users under the age of 13," FTC Chairman Joe Simons said in a statement Wednesday.